505818072 has 48 divisors (see below), whose sum is σ = 1414121280. Its totient is φ = 163166400.

The previous prime is 505818037. The next prime is 505818109. The reversal of 505818072 is 270818505.

505818072 is a `hidden beast` number, since 5 + 0 + 581 + 8 + 0 + 72 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 111079 + ... + 115542.

It is an arithmetic number, because the mean of its divisors is an integer number (29460860).

Almost surely, 2^505818072 is an apocalyptic number.

It is an amenable number.

505818072 is an abundant number, since it is smaller than the sum of its proper divisors (908303208).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

505818072 is a wasteful number, since it uses less digits than its factorization.

505818072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226664 (or 226657 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 36.

The square root of 505818072 is about 22490.3995518088. The cubic root of 505818072 is about 796.7671996828.

It can be divided in two parts, 50581 and 8072, that added together give a triangular number (58653 = T₃₄₂).

The spelling of 505818072 in words is "five hundred five million, eight hundred eighteen thousand, seventy-two".